Consult your doctor before using Viagra, especially if you have heart problems, low blood pressure, or liver/kidney disease. Viagra can lower blood pressure significantly.
Common side effects include headache, flushing, nasal congestion, and visual disturbances. These usually are mild and temporary. Severe side effects are rare but include:
| Prolonged erection (priapism) | Erection lasting more than 4 hours. | Seek immediate medical attention. This is a medical emergency. |
| Sudden vision loss | Complete or partial loss of vision. | Stop taking Viagra and contact your doctor immediately. |
| Sudden hearing loss | Partial or complete hearing loss. | Stop taking Viagra and contact your doctor immediately. |
| Heart attack or stroke | Chest pain, shortness of breath, weakness. | Seek immediate medical attention. |
Avoid grapefruit juice while taking Viagra, as it can increase the drug’s concentration in your blood. Don’t combine Viagra with other ED medications or nitrates.
Inform your doctor about all medications you are currently taking, including prescription and over-the-counter drugs, and herbal supplements. This helps prevent dangerous interactions.
If you experience any concerning side effects, stop using Viagra and contact your physician promptly.
